Dual size plumbing end cap

Abstract

A dual size plumbing end cap is disclosed which capable of sealing the end of two sizes of pipe includes a fluid impervious membrane having a first cylindrical wall extending therefrom and configured to envelop an end of a pipe having a first diameter and, cooperatively with the membrane, seal the end of the pipe. A second cylindrical wall is associated with the membrane and has a diameter which is larger than the first wall. The second wall is configured to envelop an end of a second pipe having a second diameter and, cooperatively with membrane, seal the end of the second pipe. The end cap may include a test fitting which extends through the membrane and is configured to securely connect to a test gauge, air source, or water source.

What is claimed is:  
     
       1. A plumbing end cap, comprising: 
       a fluid impervious membrane;  
       a first cylindrical wall extending from the membrane and configured to envelop an end of a first pipe having a first diameter and, cooperatively with the membrane, seal the end of the first pipe; and  
       a second cylindrical wall associated with the membrane having a diameter which is larger than the first cylindrical wall and configured to envelop an end of a second pipe having a second diameter and, cooperatively with the membrane, seal the end of the second pipe;  
       wherein the first and second walls extend from the same surface of the membrane so as to be concentric, the first wall being of a greater length than the second wall; and wherein inner surfaces of the first and second walls include protruding ridges configured to secure the first or second walls to the end of the first or second pipe.  
     
     
       2. The plumbing end cap of  claim 1 , including a test fitting extending through the membrane and being configured to securely connect to a test gauge, air source or water source. 
     
     
       3. The plumbing end cap of  claim 1 , wherein the first and second walls are comprised of a flexible material, the first or second wall being secured to the first or second pipe with a clamp surrounding an outer surface of the first or second wall. 
     
     
       4. The plumbing end cap of  claim 1 , wherein inner surfaces of the first and second walls include internal threads configured to mate with external threads of the first or second pipe. 
     
     
       5. A plumbing end cap, comprising: 
       a fluid impervious membrane;  
       a first cylindrical wall extending from the membrane and configured to envelop an end of a first pipe having a first diameter and, cooperatively with the membrane, seal the end of the first pipe;  
       a second cylindrical wall associated with the membrane having a diameter which is larger than the first cylindrical wall and configured to envelop an end of a second pipe having a second diameter and, cooperatively with the membrane, seal the end of the second pipe; and  
       a test fitting extending through the membrane and including internal threads to securely connect to a test gauge, air source or water source.  
     
     
       6. The plumbing end cap of  claim 1 , wherein the first and second walls are comprised of a flexible material, the first or second wall being secured to the first or second pipe with a clamp surrounding an outer surface of the first or second wall. 
     
     
       7. The plumbing end cap of  claim 5 , wherein inner surfaces of the first and second walls include protruding ridges configured to secure the first or second walls to the end of the first or second pipe. 
     
     
       8. The plumbing end cap of  claim 5 , wherein inner surfaces of the first and second walls include internal threads configured to mate with external threads of the first or second pipe. 
     
     
       9. The plumbing end cap of  claim 5 , wherein the first and second walls extend from opposite surfaces of the membrane. 
     
     
       10. The plumbing end cap of  claim 5 , wherein the first and second walls extend from the same surface of the membrane so as to be concentric. 
     
     
       11. The plumbing end cap of  claim 10 , wherein the first wall is of greater length than the second wall. 
     
     
       12. The plumbing end cap of  claim 5 , wherein the second cylindrical wall extends in stepped fashion from the first cylindrical wall. 
     
     
       13. A plumbing end cap, comprising: 
       a fluid impervious membrane;  
       a first flexible, cylindrical wall extending from the membrane and configured to envelop an end of a first pipe having a first diameter and, cooperatively with the membrane, seal the end of the first pipe;  
       a second flexible, cylindrical wall associated with the membrane having a diameter which is larger than the first cylindrical wall and configured to envelop an end of a second pipe having a second diameter and, cooperatively with the membrane, seal the end of the second pipe;  
       a clamp surrounding an outer surface of the first or second walls to secure the first or second wall to the respective first or second pipe; and  
       prongs extending from an outer surface of the first and second walls for positioning the clamp.  
     
     
       14. The plumbing end cap of  claim 13 , including a test fitting extending through the membrane and being configured to securely connect to a test gauge, air source or water source. 
     
     
       15. The plumbing end cap of  claim 13 , wherein inner surfaces of the first and second walls include protruding ridges configured to secure the first or second walls to the end of the first or second pipe. 
     
     
       16. The plumbing end cap of  claim 13 , wherein the first and second walls extend from opposite surfaces of the membrane. 
     
     
       17. The plumbing end cap of  claim 13 , wherein the first and second walls extend from the same surface of the membrane so as to be concentric, and wherein the first wall is of greater length than the second wall. 
     
     
       18. The plumbing end cap of  claim 13 , wherein the second cylindrical wall extends in stepped fashion from the first cylindrical wall. 
     
     
       19. A plumbing end cap, comprising: 
       a fluid impervious membrane;  
       a wall extending from the membrane in stepped fashion to define a first cylindrical wall and a second cylindrical wall of greater diameter, the first cylindrical wall being configured to accept an end of a first pipe having a first diameter and, cooperatively with the membrane, seal the end of the first pipe, the second cylindrical wall being configured to accept an end of a second pipe having a second diameter and, cooperatively with the membrane, seal the end of the second pipe; and  
       a test fitting extending through the membrane and being configured to securely connect to a test gauge, air source or water source.  
     
     
       20. The plumbing end cap of  claim 19 , wherein an inner surface of the first and second walls include protruding ridges configured to secure the first or second walls to the end of the first or second pipe. 
     
     
       21. The plumbing end cap of  claim 19 , wherein the inner surface of the first and second walls include internal threads configured to mate with external threads of the first or second pipe. 
     
     
       22. The plumbing end cap of  claim 19 , wherein the first and second walls are comprised of a flexible material, the first or second wall being secured to the first or second pipe with a clamp surrounding an outer surface of the first or second wall. 
     
     
       23. A plumbing end cap, comprising: 
       a fluid impervious membrane;  
       a first cylindrical wall extending from the membrane and configured to envelope an end of a first pipe having a first diameter, and, cooperatively with the membrane, seal the end of the first pipe; and  
       a second cylindrical wall extending from the membrane opposite the first cylindrical wall and having a diameter which is larger than the first cylindrical wall and configured to envelope and end of a second pipe having a second diameter which is larger than the diameter of the first pipe and, cooperatively with the membrane, seal the end of the second pipe.  
     
     
       24. The plumbing end cap of  claim 23 , including a test fitting extending through the membrane and being configured to securely connected to a test gauge, air source or water source. 
     
     
       25. The plumbing end cap of  claim 24 , wherein the test fitting extends through the membrane to allow connection to a test gauge, air source or water source on either side of the membrane. 
     
     
       26. The plumbing end cap of  claim 23 , wherein the first and second walls are comprised of a flexible material, the first or second wall being secured to the first or second pipe with a clamp surrounding an outer surface of the first or second wall. 
     
     
       27. A plumbing end cap, comprising: 
       a fluid impervious membrane;  
       a first cylindrical wall extending from the membrane and configured to envelop an end of a first pipe having a first diameter and, cooperatively with the membrane, seal the end of the first pipe;  
       a second cylindrical wall associated with the membrane having a diameter which is larger than the first cylindrical wall and configured to envelop an end of a second pipe having a second diameter and, cooperatively with the membrane, seal the end of the second pipe; and  
       a test fitting extending through the membrane configured to securely connect to a test gauge, air source or water source;  
       wherein the first and second walls extend from the same surface of the membrane so as to be concentric.  
     
     
       28. A plumbing end cap, comprising: 
       a fluid impervious membrane;  
       a first flexible, cylindrical wall extending from the membrane and configured to envelop an end of a first pipe having a first diameter and, cooperatively with the membrane, seal the end of the first pipe;  
       a second flexible, cylindrical wall associated with the membrane having a diameter which is larger than first cylindrical wall and configured to envelop an end of a second pipe having a second diameter and, cooperatively with the membrane, seal the end of the second pipe; and  
       a clamp surrounding an outer surface of the first or second walls to secure the first or second wall to the respective first or second pipe;  
       wherein the first and second walls extend from the same surface of the membrane so as to be concentric, and wherein the first wall is of a greater length than the second wall.  
     
     
       29. A plumbing end cap, comprising: 
       a fluid imperious membrane;  
       a first cylindrical wall extending from the membrane and configured to envelope an end of a first pipe having a first diameter and, cooperatively with the membrane, seal the end of the first pipe; and  
       a second cylindrical wall extending from the same surface of the membrane and having a diameter which is larger than the first cylindrical wall so as to be concentric with the first cylindrical wall and configured to envelope an end of a second pipe having a second diameter larger than the first diameter of the first pipe and, cooperatively with the membrane, seal the end of the second pipe; and wherein the inner surfaces of the first and second walls include internal threads configured to meet with external threads of the first or second pipe.  
     
     
       30. The plumbing end cap of  claim 29 , wherein inner surfaces of the first and second walls include protruding ridges configured to secure the first or second walls to the end of the first or second pipe.